可同时处理多项任务，并使用更大键盘更快速地进行输入，从而提高工作效率。 WhatsApp works by using a "retailer and ahead" system for exchanging messages amongst two consumers. When a person sends a information, it is actually stored on the WhatsApp server, which tries to ahead it to the addressee, and regularly requests acknowledgement of receipt. 便捷：从任何浏览器登录，与联系人保持联系... https://apps-whatsapp.com/whatsapp-web